I've always wondered if epoxy could help in this situation. Could epoxy be put into the holes to build them inward a bit? Then, drill out any excess and thread the screw in there. Wouldn't the threads dig into the hardened epoxy, making a great fit?
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FireFox31
110gig MKIIa (30+80), Eutronix lights, 32 meg stacked RAM, Filener orange gel lens, Greenlights Lit Buttons green set